气体进化原理在沿煤层钻孔的气体排水过程中,以及合理的钻孔布局间隔
Yutian Wang1, Xun Zhao2,3, Pengfei Wang1,4
1School of Resources Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411100, China.
ACS omega
|November 29, 2023
概括
优化钻孔间距可以提高煤层气排水效率. 了解钻井井附近的气体演变和压力变化是有效的开采和矿山安全的关键.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 地质工程是地质工程.
- 流体动力学 流体动力学
背景情况:
- 煤层气 (CSG) 排水对于矿山安全和资源回收至关重要.
- 优化钻井布局和了解气体演变对于高效的CSG提取至关重要.
研究的目的:
- 为了研究CSG排水过程中的气体演变原理.
- 优化钻井井布局间距,以提高贵州市排水效率. 两个煤层. 煤层.
主要方法:
- 开发了CSG排水的流体结构相互作用模型.
- 使用COMSOL模拟软件进行数值分析.
- 验证的模拟结果与项目现场数据.
主要成果:
- 在早期排水阶段,钻井附近的气体压力显著下降.
- 邻近钻井的排水导致压力迅速下降,以及洞之间明显的气体迁移.
- 增加钻孔间距减少了叠加效应,导致独立的圆形排水区.
结论:
- 钻孔间距直接影响CSG排水效率.
- 该研究提供了一种方法来确定最佳的钻孔间距,以提高气体提取效率.
- 结果提供了关于气体压力演变,速度场和排水区域预测的见解.
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